Oil-burner.



P. R. H. LENZ.

OIL BURNER.

APPLICATION FILED 1AN.I6, 19I8.

1,258,587., Patented June 4, 1918.

PAUL B. H. LENZ, 013 LOS ANGELES, CALIFORNIA.

Be it known that I, PAUL R. H. LENZ, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Oil-Burner, of which thefollowing is a specification.

My invention relates to burners for burning petroleum and similarhydrocarbon oils.

One object of the invention is to thoroughly mix and burn the oilssmokelessly.

Another object is to provide a primary burner for smokeless] heating theretort before the fuel is heated by the whole burner.

Another object is to construct the main burners so that they can beplaced with their orifices away from or toward the retort so as tochange the heating capacity of the burners in relation to the retort.

Another object is to provide suitable air mixing and heating chambersthrough which the vaporized fuel has to pass.

Another object is to provide vaporizing,

means within the retort. a Another object is to provide a second primaryheating means for the fuel to be heated before the burner is inoperation.

Other objects will appear from the following description and appendedclaims as well as from the accompanying drawing, 1n which- Figure 1 is aside elevation of my complete burner. a

Fig. 2 is a cross section on llne 2--2 oi Fi ll.

ig 3 is a fragmentary cross section of the burners. showing the orificesof the burners slightly inclined toward the middle to illustrate thatthe burner tubes are turnably mounted to allow such movement.

Fig. 4c is another frmentary cross section with the burner tubes turnedto bring the orifices farther apart.

Similar numbers refer to similar parts thil ougl ahlout the saeveralviewsi1 l n l, 5 esignates t e suppy ipe which fd rms the retort for myburner having the downwardl extending arm 6, terminating in the two'schargin "ends 7 and 8. The supply pipe 5 is secure to the mixingchamber 11 y the plate 9 and the bolt 10. The mixing chamber is providedwith an extension end 12 into the open end of which the discharging end7 leads, as indicated at 18. A boss14 is provided on the outside of themixing chamber, being threaded for Patented June 4, 1918.

1,268,587, Specification of Letters Patent. I

Application filed January 18, 1918. Serial Ito. 212,067.

To all whom it may concern:

the valve stem 15. The valve stem 15 is provided with a needle'valve 16engaging with the discharging end 7 of the supply pipe. The hand wheel17 is for adjusting the valve in relation to the opening in thedischarge end 7 by screwing the stem 15 farther into and through theboss 14 thereby shutting off the opening in the discharge end 7 more orless, or by turning back the stem 15 so as to withdraw the needle valvefrom engagement with the boss or discharge end 7. A suitably formedbearing 18 is provided within the extension end 12 of the mixingchamber, see also Fig. 2, for guiding the needle valve into the openingof the discharge end 7.

A mixing chamber 19 with an extension end 20 similar to the mixingchamber 11 and the. extension end 12 inclose the needle valve and stemdesignated at 21 and 22, arranged oppositely the discharge end 8 o thesupply pipe.

A suitable number of recesses provided in the walls of the mixingchambers 11 and 19 as indicated at 23 serve to receive and support theburner tubes 21 and 25. The mixing chambers are provided with openings26 allowing a communication of the mixing chambers with the inside ofthe burner tubes. The burner tubes are open at the end adjacent to themixing chambers having suitable flanges 27 fitting and resting in therecesses 23 held in such position by the plates 28 which are secured tothe mixing chambers by the bolts 29. The free ends 30 of the burnertubes are closed causing the gas mixture to pass out of the narrow slots31, forming the orifices for and of the burner.

Mounting the burner tubes turnably onthe flanges 27 makes it possible toturn and set the orifices in the tubes at difierent angles in relationto the retort as can be more clearly seen and understood from the Figs.2, 3 and 4. The gas escaping out of the orifices'in the burner tubeswhen set as illustrated in Fig. 2, only strikes and passes partly aroundthe burner supply pipe 5, a's indicated at 32 while the gas passesalmost with its full force around the sup ly pipe 5 when the burnertubes are turned and set to bri the orifices to the position illustratedin 'g. 3, as indicated at 33, producing and causing a much betterheating of the fuel paming through the supply iipe before such fuel pawsinto the mixing c amber, as

will easily be understood; and on the other hand, when turning theburner tubes to bring the orifices farther apart or to a position asillustrated in Fig. 4, the .gas naturally passes much less around thesupply pipe 5, the burning gas giving very little heat to the passingfuel in the supply pipe 5.

. With this arrangement it is possible to heat the fuel passing throughthe supply pipe corresponding to the fuel used in a certam furnace toprocure the right mixture and correctly heated mixture or differentkinds and sizes of furnaces without having to construct different sizesfor slightly different furnaces. This arrangement allows also to usedifferent kinds of fuel in the same burned by simply settin the burnertubes correspondingly to heat t e fuel prop-v erly in relation to itsgravity, as will easily be understood.

To intensify, increase, or force the vaporizing of the fuel in thisburner, a wire coiled properly is placed into the supply pipe 5 havingthe coils gradually increasmg from the ends 34 toward the middle 35.

In case that no suitable fuel oil is on hand, an electrically operatedheater is provided on the burner, consisting in the plates 36 and 37,which are soldered or welded to-- gether around the edges so as to forma suitable space between the plates, and suitable coils 38 disposed in asuitable casing 39 adjacent to the plates 36. and 37 are connected to anelectric current at 40. Sendin a suitable electric current through the(3011s 38 naturally throws the heat from thecoils toward the plates 36and 37 thereby heating the fuel passing through the small space betweenthe plates. Atone place, of course, the plates are not welded together,where a suitable connection 41 is secured for directing the fuel supplythrough the space between the plates, as will easily be understood.

For heating the fuel, passin through the supply-pipe 5, when starting te burner, an oil pan 42 is provided on the mixing chamber at a suitableplace below the supply pipe. A wick 43 is placed into the pan 42 heldbetween the carriers 44 with the upper edge a suitable distance belowthe supply-pipe 5 and between the burner tubes 24 and 25 so as to heatthe fuel passing through the supply pipe before it entersthe burnertubes and so that the gas procured from the fuel and the air passingthrough the mixing chamber out of the burner-tubes may be ignited by theflame of the primary burner formed by the wick 43, the pan 42 and thecarriers 44. The carriers 44 are with suitable perforations 45 to a owair to pass near the wick 43 at its upper edge, throu h the space formedbetween the wlck and t 9 carriers.

rovided at 13, there mixing with the a1r passing into the mixing chamberat the same point, the gas mixture passing through the chamber 12 andupwardly through the chamber 11, escaping through the openings 26 intothe burner tubes 24, hence out of the orifices 31 in the burner tubeswhere the gas is ignited. Having developed enough gas to burn a suitablylarge flame from the orifices of the burner tubes, the'p'rimary burneris not necessary any longer, as the flame on the burner tubes can beregulated 'as described above in relation to Figs. 2,3 and 4, by turningthe burner tubes to cause the flame to directly strike the supply pipe 5as rangement is also suitable for rather heavy fuel" or fuel whichrequires a rather strong rimary heating before it esca es out of theurner, while fuel whichre uires less heating while-passing through t esupply pipes allows a turning and setting of the burner tubes asillustrated in Figs. 2 and 4. From this it will easily. be understoodthat the primary heating by an electric heating system or by the primaryburner between the burner tubes is only used for. a very short timewhile the heat from the flame of the burner tubes isnormally heating thefuel passmg through the supply pipe as described.

So far the burner is described in its operat1on to one half of thedevice illustrated in Fig. 1, which is enough for and under normalconditions, but for extra strongburning and for developing extra strongheat, the second part of the device illustrated in Fi a 1 is provided toallow a forcing of suitab e the I needle valve 16 correspondingly. Thisarmower as to develop enough gas for the burner tubes 24 as well as forthe burner tubes 25, as will easily be understood.

Having thus described my invention, I claim:

1. In a burner of the class described two burner tubes arranged inpractically horizontal and parallel position having a suitable number oforifices, a mixing chamber arranged below the burnertubes in itshorizontal part having also a practically vertical part, the horizontalpart terminat ng in an open end while the vertical part hascommunicating openings for the burner tubes, the vertical part is alsoprovided with circular recesses near the communicating openings, theburner tubes being closed on one end while the other end is providedwith afiange turnably fitting in the circular recesses of the mixingchamber, and suitable means provided for movably holding the burnertubes engaged within the recesses of the mixing chambers with theorifices in the burner tubes in the desired position.

2. In a burner of the class described a mixing chamber, burner tubeshaving communication with the mixing chamber, a fuel supply pipedisposed above the burner tubes, and a primary burner provided on themixing chamber between two of the burner tubes and below the supplypipe, the primary burner comprising a pan provided on the mixingchamber, a wick disposed in the pan, and a wick carrier having asuitably formed part for holding the wick in a position below the supplypipe.

3. In a burner of the class described 1n combination with a mixingchamber, burner tubes having communication with the mlxing chamber, afuel supply pipe disposed above the burner tubes, and a primary burnerprovided on the mixing chamber below the supply pipe; an electricallyoperated heating and vaporizing means lsposed in the supply line at asuitable place before. the supply pipe passes over the burner tubes.

4. In a burner of the class described in combination with a mixingchamber having burner tubes in a practically horizontal position and afuel supply pipe disposed above the burner tubes terminating at asuitable place within the mixing chamber; an electrically operatedheating and vaporizing means comprising two plates adjacentto each otherhaving the edges joined air-tight up to a suitable distance for fuelinlet connection and another suitable distance for connection of thesaid fuel supply pipe, and a suitable coil disposed adjacent to theplates having connections for an electric current.

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses.

PAUL R. H. LENZ.

Witnesses Orro H. KRUEGER, Pnnen A. PARKER.

